so, overnight, he hit las vegas in battleground state, nevada. he took a moment to honor the four fallen americans. >> as americans, we stand united, all of us, in gratitude for their service. and we are mindful of their sacrifice. >> reporter: this morning, however, many questions remain about insufficient security at those diplomatic posts on the anniversary of 9/11. and u.s. leadership in the region in the wake of the arab spring. after all, the president told telemundo this about egypt, the former stalwart ally. >> i don't think we would consider them an ally. >> reporter: if not, some are asking why the u.s. gives egypt billions of dollars in foreign aid each year. meantime, the republican ticket is sensing a new front in the campaign. hitting the president on foreign policy. >> the administration sent mixed signals to those who attacked our embassy in egypt and mixed signals to the world. >> reporter: but mitt romney is now facing tough questions, too. while the battle in benghazi was still going on, romney attacks the obama administration